Page 184 - Petroleum Production Engineering, A Computer-Assisted Approach

Guo, Boyun / Computer Assited Petroleum Production Engg 0750682701_chap12 Final Proof page 180 4.1.2007 2:43pm Compositor Name: SJoearun

12/180 ARTIFICIAL LIFT METHODS
depth of 3,000 ft? If yes, what is the required coun- pated production rate is 500 bbl/day oil of 40 8API
ter-balance load? gravity against wellhead pressure 150 psig. It is as-
sumed that the working liquid level is low, and a
12.10 A well is pumped off with a rod pump described sucker rod string having a working stress of
1
in Problem 12.8. A 2 ⁄ 2 -in. tubing string (2.875-in. 30,000 psi is to be used. Select surface and subsur-
OD, 2.441 ID) in the well is not anchored. Calculate face equipment for the installation. Use a safety
(a) expected liquid production rate (use pump volu- factor of 1.40 for prime mover power.
metric efficiency 0.80) and (b) required prime mover
power (use safety factor 1.3). 12.13 A well is to be put on a sucker rod pump. The
12.11 A well is pumped with a rod pump described in proposed pump setting depth is 4,000 ft. The antici-
Problem 12.9 to a liquid level of 2,800 ft. A 3-in. pated production rate is 550 bbl/day oil of 35 8API
1
tubing string (3 ⁄ 2 -in. OD, 2.995-in. ID) in the well gravity against wellhead pressure 120 psig. It is as-
is anchored. Calculate (a) expected liquid production sumed that working liquid level will be about
rate (use pump volumetric efficiency 0.85) and (b) 3,000 ft, and a sucker rod string having a working
required prime mover power (use safety factor 1.4). stress of 30,000 psi is to be used. Select surface and
12.12 A well is to be put on a sucker rod pump. The subsurface equipment for the installation. Use a
proposed pump setting depth is 4,500 ft. The antici- safety factor of 1.30 for prime mover power.